Bernoulli filter

摘要

A filter apparatus and method for filtering a liquid. The filter apparatus comprises a housing that has at least one inlet for admission of the liquid to be filtered and at least one outlet for discharge of the filtered liquid. The apparatus further comprises at least two substantially cylindrical filter elements that can be fitted into the housing and which have a plurality of openings through which the liquid can flow to filter particles out of the liquid, and at least one filter cleaning element that can be introduced into a respective filter element in a region of an inner surface of the filter element to increase a flow speed of the liquid to be filtered so that substances in the filter element are flushed away. The filter elements are further connected in a parallel arrangement in the filter apparatus.

主权项

1. A filter assembly for filtering a liquid, comprising:
a filter housing including a top plate, a bottom plate, a cylindrical wall extending from the top plate to the bottom plate, and an outlet passage; an inlet distributor including a lowermost plate, a cylindrical wall extending downwardly between the bottom plate and the lowermost plate and defining an interior volume, and an inlet passage; a plurality of cylindrical filter elements extending vertically from the bottom plate and through the filter housing toward the top plate, each of the cylindrical filter elements including an inlet orifice and an interior that is in fluid communication with the interior volume of the inlet distributor via the inlet orifice; a plurality of movable cleaning devices, each movable cleaning device being positioned relative to a respective one of the cylindrical filter elements and including a stroke device, a stroke bar, and a filter cleaning element arranged on the stroke bar; and a plurality of valves, each valve including a valve body sized and shaped to sealingly engage the inlet orifice of a respective one of the cylindrical filter elements, a thrust rod reciprocatingly extending through the lowermost plate, and a drive piston coupled with the valve body by the thrust rod, wherein each valve body is movable by the respective drive piston such that the valve body sealingly seats with an edge of the respective inlet orifice.